<template>
  <div class="hm-main">我是main</div>
</template>

<script>
export default {

}
</script>

<style>
.hm-main{
    height: 400px;
    line-height: 400px;
    text-align: center;
    background-color: chartreuse;
    color: white;
    margin: 20px;
}
</style>